58138-79-7Relevant articles and documents
Discovery and structure-activity relationship of 2,6-disubstituted pyrazines, potent and selective inhibitors of protein kinase CK2
Fuchi, Nobuhiro,Iura, Yosuke,Kaneko, Hiroaki,Nitta, Aiko,Suyama, Kazuharu,Ueda, Hiroshi,Yamaguchi, Shinichi,Nishimura, Kazumi,Fujii, Shigeo,Sekiya, Yumiko,Yamada, Masateru,Takahashi, Toshiya
, p. 4358 - 4361 (2012)
We report the discovery and structure-activity relationship of 2,6-disubstituted pyrazines, which are potent and selective CK2 inhibitors. Lead compound 1 was identified, and derivatives were prepared to develop potent inhibitory activity. As a result, we obtained compound 7, which was the smallest unit that retained potency. Then, introducing an aminoalkyl group at the 6-position of the indazole ring resulted in improved efficacy in both enzymatic and cell-based CK2 inhibition assays. Moreover, compound 13 showed selectivity against other kinases and in vivo efficacy in a rat nephritis model. These results show that 2,6-disubstituted pyrazines have potential as therapeutic agents for nephritis.
tele-Substitution Reactions in the Synthesis of a Promising Class of 1,2,4-Triazolo[4,3- a]pyrazine-Based Antimalarials
Korsik, Marat,Tse, Edwin G.,Smith, David G.,Lewis, William,Rutledge, Peter J.,Todd, Matthew H.
, p. 13438 - 13452 (2020/12/15)
We have discovered and studied a tele-substitution reaction in a biologically important heterocyclic ring system. Conditions that favor the tele-substitution pathway were identified: the use of increased equivalents of the nucleophile or decreased equivalents of base or the use of softer nucleophiles, less polar solvents, and larger halogens on the electrophile. Using results from X-ray crystallographic and isotope labeling experiments, a mechanism for this unusual transformation is proposed. We focused on this triazolopyrazine as it is the core structure of the in vivo active antiplasmodium compounds of Series 4 of the Open Source Malaria consortium.
TRI-CYCLIC PYRAZOLOPYRIDINE KINASE INHIBITORS
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Page/Page column 95; 96, (2010/04/03)
The present invention relates to compounds useful as inhibitors of protein kinase. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, co